Get the length of a given vector
Is this triangle right-angled?
Calculate Amount of Cake Frosting
Matrix for beginners
Variance computation (★)
Generate n equally spaced "intervals" between -x and x (★)
Create a vector with n repeated values of a number x (★★)
Create a vector of n alternating ones and zeros (★★)
Reindex a vector (★★)
Create a vector of the first n natural numbers (★)
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